Comparing 1.5 T and 3.0 T MR data for 3D visualization of neurovascular relationships in the posterior fossa
Hastreiter P, Maliachova O, Fahlbusch R, Dörfler A, Buchfelder M, Naraghi R (2023)
Publication Type: Journal article
Publication year: 2023
Journal
Book Volume: 165
Pages Range: 3853-3866
Journal Issue: 12
DOI: 10.1007/s00701-023-05878-y
Abstract
Background: Neurovascular relationships in the posterior fossa are more frequently investigated due to the increasing availability of 3.0 Tesla MRI. For an assessment with 3D visualization, no systematic analyzes are available so far and the question arises as to whether 3.0 Tesla MRI should be given preference over 1.5 Tesla MRI. Methods: In a prospective study, a series of 25 patients each underwent MRI investigations with 3D-CISS and 3D-TOF at 1.5 and 3.0 Tesla. For both field strengths separately, blood vessel information from the TOF data was fused into the CISS data after segmentation and registration. Four visualizations were created for each field strength, with and without optimization before and after fusion, which were evaluated with a rating system and verified with the intraoperative situation. Results: When only CISS data was used, nerves and vessels were better visualized at 1.5 Tesla. After fusion, flow and pulsation artifacts were reduced in both cases, missing vessel sections were supplemented at 3.0 Tesla and 3D visualization at 1.5 and 3.0 Tesla led to anatomically comparable results. By subsequent manual correction, the remaining artifacts were further eliminated, with the 3D visualization being significantly better at 3.0 Tesla, since the higher field strength led to sharper contours of small vessel and nerve structures. Conclusion: 3D visualizations at 1.5 Tesla are sufficiently detailed for planning microvascular decompression and can be used without restriction. Fusion further improves the quality of 3D visualization at 3.0 Tesla and enables an even more accurate delineation of cranial nerves and vessels.
Authors with CRIS profile
Peter Hastreiter
Department of Neurosurgery
Olga Maliachova
Medizinische Fakultät
Arnd Dörfler
Department of Neuroradiology
Michael Buchfelder
Lehrstuhl für Neurochirurgie
Involved external institutions
Germany (DE)How to cite
APA:
Hastreiter, P., Maliachova, O., Fahlbusch, R., Dörfler, A., Buchfelder, M., & Naraghi, R. (2023). Comparing 1.5 T and 3.0 T MR data for 3D visualization of neurovascular relationships in the posterior fossa. Acta Neurochirurgica, 165(12), 3853-3866. https://doi.org/10.1007/s00701-023-05878-y
MLA:
Hastreiter, Peter, et al. "Comparing 1.5 T and 3.0 T MR data for 3D visualization of neurovascular relationships in the posterior fossa." Acta Neurochirurgica 165.12 (2023): 3853-3866.
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